Research On Integrated Optimization Of Planning And Scheduling For The Two Stage Mixed Flow Production System

Manufacturing industry is the main industry of industrialization,has always been the foundation of the national economy,and is a fundamental and hope of social progress.The development of this kind of complex product,automobile,aircraft and spacecraft manufacturing industry for a country is to have important strategic significance.The complex products are made from raw materials into semi-finished or finished products,which are generally done in multistage manufacturing system.Multistage manufacturing system is the main processing methods of complex products;most of the production system belongs to the multistage manufacturing system.Each subsystem can realize the processing,assembly and manufacturing process can realize the value added.Multistage manufacturing system for complex products pays more attention to the system flexibility and the timeliness of response,which depends on the advanced production management mode and efficient technology.Multistage manufacturing system for complex products pays more attention to the system flexibility and the timeliness of response,which depends on the advanced production management mode and efficient technology.Based on the review of relevant research,combined with the characteristics of the production system,solve the integrated optimization of production planning and scheduling problem of mixed model assembly workshop.At the same time,considering the complexity of the relationship between all levels of production system,and establish an integrate optimization of production plan and schedule model of multistage production system.In the process of solving the model,summarizes the current production planning and scheduling model of several kinds of algorithm,including the accurate algorithm,heuristic algorithm and intelligent optimization algorithm,and introduces the concept of particle swarm algorithm.Based on the analysis of the particle swarm algorithm system,the algorithm was improved;the production planning and scheduling optimization is applied to solve the problem in multi-stage workshop,put forward the method of integrated optimization of production planning and scheduling based on particle swarm algorithm,provides a new optimization algorithm for production planning and scheduling problem of enterprises.After the model is set up,combined with practical examples to verify the validity of the model,proved the rationality and validity of the model and algorithm.